Open-source rule packs for European web accessibility

ariada.org is the OSS Commons publisher for the @ariada/* rule-pack family — targeted WCAG 2.2 AA rule expressions for axe-core, aligned to the European Accessibility Act 2025 and EN 301 549 v3.2.1.

Maintained by Agonist Development AB (Sweden). The commercial sister product is ariada.ai. This site exists so the rule packs and their contributor workflow live under a public-good identity, separate from the commercial surface.

Packages

@ariada/wcag-rules-extended

EAA 2025-ready rule packs extending axe-core. Nordic-language patterns, consumer-facing service flows, and accessibility-statement coverage that the upstream ruleset does not address by default.

pnpm add -D @ariada/wcag-rules-extended axe-core

Status: pre-release. Package page →

License and Commons

Source is licensed under the European Union Public Licence v1.2 (EUPL-1.2). The EUPL is the European Commission's reciprocal-share licence, compatible with GPL-style copyleft and explicitly drafted under EU law — a good fit for accessibility tooling consumed by public-sector buyers under EAA enforcement.

The rule corpus maps every published expression to a WCAG 2.2 Success Criterion or an EN 301 549 / DOS-lagen / EAA Annex I clause. The mapping table lives in the package README and is part of the public Commons.

Get involved

• Source — github.com/agonist-ai/ariada-rules-extended-public
• Issue tracker — same repository, GitHub Issues
• Contribution guide — CONTRIBUTING.md
• Security disclosure — see SECURITY.md

Pre-release: the first tagged release lands once the EUPL-1.2 verbatim text and IP-boundary CI guard pass; an NLnet / NGI Zero Commons grant application is in flight. Watch the GitHub repository for the first release tag.